1. Timothy M. Dall, MS; Yiduo Zhang, PhD; Yaozhu J. Chen, MPA; Rachel C. Askarinam Wagner, MS; and Paul F. Hogan, MS, are with The Lewin Group, Falls Church, Virginia. Nancy K. Fagan, DVM, PhD; Samuel T. Olaiya, PhD; and David N. Tornberg, MD, MPH, are with TRICARE Management Activity, Falls Church, Virginia